CN116014611B - Intelligent ring main unit and control method thereof - Google Patents

Abstract

The invention discloses an intelligent ring main unit and a control method thereof, and relates to the technical field of electrical equipment.

Description

Intelligent ring main unit and control method thereof

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an intelligent ring main unit and a control method thereof.

Background

The ring main unit is an electrical device for mounting electrical elements such as a high-voltage switch and the like in the metal cabinet body, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The core part of the ring main unit is a power-off switch and a radiator. When abnormal conditions such as over-temperature, overcurrent overload and the like occur in the ring main unit, the power-off switch can timely cut off the total circuit of the ring main unit, so that the function of protecting electrical equipment in the ring main unit is achieved. The existing power-off switch is complex in structure and not provided with an intelligent recovery function, and once the power-off switch is disconnected, manual recovery is needed, so that the power-off switch is quite inconvenient. In addition, the existing ring main unit has poor cooling and heat dissipation effects, intelligent cooling cannot be performed according to actual temperature change conditions in a certain time, so that cooling redundancy phenomenon occurs, and cooling cost is increased; and the phenomenon of untimely cooling also frequently occurs, thereby seriously affecting the service life of electrical components in the ring main unit.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides an intelligent ring main unit and a control method thereof.

The technical scheme adopted by the invention for achieving the purpose is as follows:

the invention discloses an intelligent ring main unit, which comprises a cabinet body, a heat dissipation assembly and an emergency power-off switch, wherein the heat dissipation assembly and the emergency power-off switch are arranged on the cabinet body;

the heat dissipation assembly comprises a heat dissipation plate, one side of the heat dissipation plate is fixedly connected with the back of the cabinet body, the other side of the heat dissipation plate is fixedly connected with a heat dissipation frame, an air flow regulating block is slidably connected in the heat dissipation frame, the interior of the heat dissipation frame is divided into a first cavity and a second cavity through the air flow regulating block, and a plurality of rows of air inlets are formed in the middle area of the heat dissipation plate;

two telescopic connecting rods are arranged in the first cavity, one ends of the telescopic connecting rods are fixedly connected with the air flow regulating block, the other ends of the telescopic connecting rods are fixedly connected with the top wall of the first cavity, a power spring is sleeved on the telescopic connecting rods, one ends of the power spring are fixedly connected with the air flow regulating block, the other ends of the power spring are fixedly connected with the top wall of the first cavity, at least one air pump is arranged at the top of the heat dissipation frame, an air outlet of the air pump is connected with one end of an air supply pipe in a matched mode, and the other ends of the air supply pipes extend into the first cavity;

A plurality of temperature sensors are arranged at preset positions in the cabinet body, and the temperature sensors are in communication connection with the air extracting pump; the lateral part of the cabinet body is provided with an air outlet.

Preferably, in a preferred embodiment of the present invention, the emergency power-off switch is attached to a total circuit in the cabinet body, and is capable of controlling on-off of total circuit current in the cabinet body through the emergency power-off switch, the emergency power-off switch includes a mounting base plate and a protection cover, a first mounting seat and a second mounting seat are symmetrically mounted on the mounting base plate, a first power-on block is fixedly mounted on top of the first mounting seat, and a first connection slot is formed on the first power-on block; the top of the second installation seat is fixedly provided with a second electrifying block, and the second electrifying block is provided with a second connecting groove.

Preferably, in a preferred embodiment of the present invention, a separation sliding seat is disposed in the protective cover, one end of the separation sliding seat is fixedly connected with the inner wall of the top of the protective cover, and the other end is fixedly connected with a first limiting piece; the separation sliding seat is connected with a separation pulling plate in a sliding manner, the bottom end of the separation pulling plate is fixedly connected with one end of a separation pulling strip, the separation pulling strip penetrates through the first limiting piece to extend out of the separation sliding seat, the other end of the separation pulling strip is fixedly connected with a rubber piece, and the bottom end of the rubber piece is fixedly connected with a connecting strip.

Preferably, in a preferred embodiment of the present invention, two sides of the middle part of the connecting strip are provided with reset pull blocks, two sides of the middle part of the mounting bottom plate are provided with reset sliding seats, one end of each reset sliding seat is fixedly connected with the mounting bottom plate, and the other end of each reset sliding seat is fixedly connected with a second limiting piece; the top of the reset pull plate is fixedly connected with one end of a reset pull rod, the other end of the reset pull rod penetrates through the second limiting piece to extend out of the reset slide seat, and the other end of the reset pull rod is fixedly connected with the reset pull block; the reset slide seat is internally provided with a telescopic spring, one end of the telescopic spring is fixedly connected with the bottom of the reset slide seat, and the other end of the telescopic spring is fixedly connected with the bottom of the reset pull plate.

Preferably, in a preferred embodiment of the present invention, a mounting hole is formed at the top of the protective cover, a separation suction block is mounted on the mounting hole, the separation suction block includes an electric insertion portion and a magnetic portion, the electric insertion portion extends out of the protective cover, and the magnetic portion extends into the separation slide.

Preferably, in a preferred embodiment of the present invention, guide grooves are formed on two sides of the separation slide, guide blocks are disposed on two sides of the separation pull plate, and the guide blocks can be engaged with the guide blocks.

Preferably, in a preferred embodiment of the present invention, lead holes are formed on two sides of the protection cover, lead pieces are disposed on the first power-on block and the second power-on block, and the lead pieces extend out of the protection cover through the lead holes.

Preferably, in a preferred embodiment of the present invention, an air pressure sensor is disposed in the first cavity, and the air pressure sensor is communicatively connected to the air pump.

The invention also discloses a control method of the intelligent ring main unit, which is applied to any one of the intelligent ring main units and comprises the following steps:

acquiring temperature parameter information in the cabinet body through a temperature sensor in preset time, calculating a temperature change rate based on the temperature parameter information, and comparing the temperature change rate with a preset change rate;

if the temperature change rate is larger than the preset change rate, controlling the air pump to start so as to cool the inside of the cabinet body;

simultaneously, continuously acquiring real-time temperature information corresponding to each moment in the cabinet body in a preset time period through a temperature sensor, and establishing a temperature-time response linear graph based on the real-time temperature information corresponding to each moment;

Extracting a first temperature value, a second temperature value and a third temperature value from the temperature-time response line graph; the first temperature value is a temperature value corresponding to a start endpoint in the temperature-time response linear graph, the second temperature value is a temperature extreme value in the temperature-time response linear graph, and the third temperature value is a temperature value corresponding to an end endpoint in the temperature-time response linear graph;

performing difference operation processing on the second temperature value and the first temperature value to obtain a first temperature difference value; performing difference operation processing on the third temperature value and the first temperature value to obtain a second temperature difference value; and comparing the first temperature difference with a second temperature difference;

and if the first temperature difference value is equal to the second temperature difference value, controlling the emergency power-off switch to be turned off so as to cut off the current of the total circuit in the cabinet body.

Preferably, in a preferred embodiment of the present invention, the method further comprises the steps of:

if the first temperature difference value is larger than the second temperature difference value, carrying out difference value operation processing on the first temperature difference value and the second temperature difference value to obtain a temperature difference value threshold;

comparing the temperature difference threshold with a preset threshold;

If the temperature difference value threshold is larger than a preset threshold, the emergency power-off switch is controlled to be turned off so as to cut off the current of the total circuit in the cabinet body; and if the temperature difference threshold is not greater than the preset threshold, not performing regulation and control treatment on the emergency power-off switch.

The invention solves the technical defects existing in the background technology, and has the following beneficial effects: the heat dissipation assembly can enable the inside of the cabinet body to form heat exchange with the external environment, so that the phenomenon of cooling redundancy is effectively avoided, the untimely cooling condition can be avoided, and the service life of the electrical components in the cabinet body is guaranteed. And can adjust the heat dissipation power according to the inside temperature change rate condition of cabinet, can make the internal temperature of cabinet keep in suitable range, realized intelligent heat dissipation on the one hand, on the other hand can effectively practice thrift the heat dissipation cost. The intelligent power-off switch has the advantages that the function of intelligently cutting off or conducting the circuit current in the cabinet is realized through the emergency power-off switch, the whole structure is simple, the separation suction block and the telescopic spring are adopted as power elements, the manufacturing cost is low, and the reliability is good.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a ring main unit;

FIG. 2 is a schematic diagram of the internal structure of the ring main unit;

FIG. 3 is a schematic view of a heat dissipating assembly in a non-heat dissipating state;

FIG. 4 is a schematic view of a heat dissipating assembly in a heat dissipating state;

FIG. 5 is a schematic cross-sectional view of a heat dissipating frame;

FIG. 6 is a schematic diagram of an emergency power off switch;

FIG. 7 is a schematic diagram of an emergency shutdown switch in an on state;

FIG. 8 is a schematic diagram of an emergency shutdown switch in an off state;

FIG. 9 is a schematic diagram of the internal structures of the separation carriage and the reset carriage;

FIG. 10 is a schematic view of the position of the separating pulling plate when the separating suction block is in the power-off state;

FIG. 11 is a schematic view showing the position of the separation pulling plate when the separation suction block is in the energized state;

FIG. 12 is a schematic view of the guide slot and guide block;

FIG. 13 is a schematic structural diagram of a first connecting slot and a second connecting slot;

the reference numerals are explained as follows: 101. a cabinet body; 102. a heat dissipation plate; 103. a heat dissipation frame; 104. a gas amount adjusting block; 105. a first cavity; 106. a second cavity; 107. an air inlet hole; 108. a telescopic connecting rod; 109. a power spring; 201. an air extracting pump; 202. an air supply pipe; 203. an air outlet hole; 204. an emergency power-off switch; 205. a mounting base plate; 206. a protective cover; 207. a first mount; 208. a second mounting base; 209. a first power-on block; 301. a first connection groove; 302. a second energizing block; 303. a second connecting groove; 304. separating the slide seat; 305. a first limiting piece; 306. separating the pulling plate; 307. separating the brace; 308. a rubber sheet; 309. a connecting strip; 401. resetting the pull block; 402. resetting the slide seat; 403. the second limiting piece; 404. resetting the pulling plate; 405. resetting the brace; 406. a telescopic spring; 407. separating the suction block; 408. a power plug-in part; 409. a magnetic part; 501. a guide groove; 502. a guide block; 503. a lead hole; 504. and (5) a lead sheet.

Detailed Description

In order that the above objects, features and advantages of the invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and detailed description thereof, which are simplified schematic drawings which illustrate only the basic structure of the invention and therefore show only those features which are relevant to the invention, it being noted that embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include one or more of the feature, either explicitly or implicitly. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The invention discloses an intelligent ring main unit, which is shown in fig. 1 and 2, and comprises a cabinet body 101, a heat radiation assembly and an emergency power-off switch 204, wherein the heat radiation assembly and the emergency power-off switch 204 are arranged on the cabinet body 101.

As shown in fig. 3, 4 and 5, the heat dissipation assembly includes a heat dissipation plate 102, one side of the heat dissipation plate 102 is fixedly connected with the back of the cabinet 101, the other side of the heat dissipation plate 102 is fixedly connected with a heat dissipation frame 103, an air flow adjusting block 104 is slidably connected in the heat dissipation frame 103, the inside of the heat dissipation frame 103 is divided into a first cavity 105 and a second cavity 106 by the air flow adjusting block 104, and a plurality of rows of air inlets 107 are arranged in the middle area of the heat dissipation plate 102.

Two telescopic connecting rods 108 are arranged in the first cavity 105, one ends of the telescopic connecting rods 108 are fixedly connected with the air flow adjusting block 104, the other ends of the telescopic connecting rods 108 are fixedly connected with the top wall of the first cavity 105, the telescopic connecting rods 108 are sleeved with a power spring 109, one ends of the power spring 109 are fixedly connected with the air flow adjusting block 104, the other ends of the power spring 109 are fixedly connected with the top wall of the first cavity 105, at least one air pump 201 is arranged at the top of the heat dissipation frame 103, an air outlet of the air pump 201 is connected with one end of the air supply pipe 202 in a matched mode, and the other ends of the air supply pipe 202 extend into the first cavity 105.

A plurality of temperature sensors are arranged at preset positions in the cabinet body 101, and the temperature sensors are in communication connection with the air extracting pump 201; the side of the cabinet 101 is provided with an air outlet 203.

It should be noted that, through this cooling module, can be according to the inside temperature change rate condition of cabinet body 101 with the cooling gas input cabinet body 101 of unit volume to realize intelligent heat dissipation function. Specifically, firstly, temperature information inside the cabinet 101 is obtained through a temperature sensor in a preset time period, then the temperature change rate inside the cabinet 101 is calculated, when the temperature change rate is larger than the preset change rate, a signal is fed back to the air pump 201 through the temperature sensor, the air pump 201 is started after receiving the signal, so that external cooling gas is pumped into the first cavity 105 along the air supply pipe 202 through the air pump 201, then the cooling gas enters the cabinet 101 through the air inlet 107, then the cooling gas cools the cabinet 101 to form hot gas, and then the hot gas is discharged through the air outlet 203, and therefore the function of cooling the inside of the cabinet 101 is achieved. And can thereby control the air extraction power of aspiration pump 201 and cool down the gas input to the gas quantity in the first cavity 105 in the unit time, when the gas quantity of cooling gas input to the first cavity 105 in the unit time is bigger, the pressure that cooling gas acted on the tolerance regulating block 104 just is bigger, the thrust that tolerance regulating block 104 received just is bigger at this moment, the amplitude that tolerance regulating block 104 moved down just is bigger at this moment, the effective volume of first cavity 105 just is bigger at this moment, and the effective volume of second cavity 106 just is smaller at this moment, the quantity of inlet port 107 in the first cavity 105 just is bigger at this moment, the more quantity that cooling gas entered into the cabinet body 101 in the unit time just is bigger at this moment, the radiating power of radiating component just is bigger at this moment, adjust radiating capacity of radiating component through this kind of mode, can make cabinet body 101 inside and external environment form the heat exchange, not only effectually avoided the phenomenon of cooling redundancy to appear, can also avoid appearing the untimely condition of cooling down, in order to guarantee the life of electrical apparatus component in the cabinet body 101.

It should be noted that, when the air pump 201 is in the non-working state (i.e. the state without air extraction), the power spring 109 is in the natural state, the air flow adjusting block 104 is pulled to the upper region of the heat dissipation plate 102 under the natural tightening force of the power spring 109, the air inlet hole 107 is not present in the first cavity 105, and the heat dissipation assembly is in the non-working state; when the air pump 201 is in a working state, the cooling gas pumped into the first cavity 105 by the air pump 201 can generate pressure on the air volume adjusting block 104, the air volume adjusting block 104 can receive a certain thrust force, the air volume adjusting block 104 can move downwards, the power spring 109 can be in a stretching state, the air inlet 107 can be formed in the first cavity 105, and the cooling gas can enter the cabinet 101 through the air inlet 107, so that a cooling function is realized. In addition, it should be noted that, during the sliding process of the air flow adjusting block 104, guiding and limiting are performed through the telescopic connecting rod 108, so as to improve the reliability and stability of the device.

It should be noted that, the function of automatically adjusting the heat dissipation power of the heat dissipation component can be realized by setting a threshold gear. For example, if the calculated temperature change rate is less than or equal to the first preset change rate, the pump 201 is operated at the first pumping power; if the temperature change rate is greater than the first preset change rate and less than the second preset change rate, the air pump 201 operates at the second air pumping power; if the temperature change rate is greater than or equal to the second preset change rate, the air pump 201 operates at the third air pumping power; and so on, the specific number of gear steps is not limited herein. Therefore, when the relative temperature of the cabinet body 101 is relatively high, the heat dissipation assembly can automatically work with larger heat dissipation power, when the relative temperature of the cabinet body 101 is relatively low, the heat dissipation assembly can automatically work with smaller heat dissipation power, the heat dissipation power can be adjusted according to the temperature change rate of the interior of the cabinet body 101 in the mode, the temperature in the cabinet body 101 can be kept in a proper range, intelligent heat dissipation is realized, and the heat dissipation cost can be effectively saved.

As shown in fig. 6, 7, 8 and 13, the emergency power-off switch 204 is mounted on a total circuit in the cabinet 101, and the on/off of the total circuit current of the cabinet 101 can be controlled by the emergency power-off switch 204, the emergency power-off switch 204 includes a mounting base 205 and a protective cover 206, a first mounting base 207 and a second mounting base 208 are symmetrically mounted on the mounting base 205, a first power-on block 209 is fixedly mounted on the top of the first mounting base 207, and a first connection slot 301 is formed on the first power-on block 209; a second power-on block 302 is fixedly installed on the top of the second mounting seat 208, and a second connection groove 303 is formed in the second power-on block 302. It should be noted that, the first mounting base 207 and the second mounting base 208 are made of insulating materials, such as insulating rubber, insulating silica gel, etc.; the first power-on block 209 and the second power-on block 302 are made of copper materials.

As shown in fig. 9 and 12, a separation sliding seat 304 is disposed in the protective cover 206, one end of the separation sliding seat 304 is fixedly connected with the inner wall of the top of the protective cover 206, and the other end is fixedly connected with a first limiting plate 305; the separation slide seat 304 is slidably connected with a separation pull plate 306, the bottom end of the separation pull plate 306 is fixedly connected with one end of a separation pull bar 307, the separation pull bar 307 passes through the first limiting plate 305 and extends out of the separation slide seat 304, the other end of the separation pull bar 307 is fixedly connected with a rubber sheet 308, and the bottom end of the rubber sheet 308 is fixedly connected with a connecting bar 309. Note that, the connecting strip 309 is made of copper material; the separator plate 306 is made of a ferrous material.

Reset pull blocks 401 are arranged on two sides of the middle part of the connecting strip 309, reset slide bases 402 are arranged on two sides of the middle part of the mounting bottom plate 205, one end of each reset slide base 402 is fixedly connected with the mounting bottom plate 205, and the other end of each reset slide base is fixedly connected with a second limiting piece 403; the reset slide seat 402 is slidably connected with a reset pull plate 404, the top of the reset pull plate 404 is fixedly connected with one end of a reset pull rod 405, the other end of the reset pull rod 405 passes through the second limit piece 403 and extends out of the reset slide seat 402, and the other end of the reset pull rod 405 is fixedly connected with the reset pull block 401; the reset slide 402 is internally provided with a telescopic spring 406, one end of the telescopic spring 406 is fixedly connected with the bottom of the reset slide 402, and the other end is fixedly connected with the bottom of the reset pull plate 404. The reset pull block 401 is made of a hard insulating material, such as hard insulating rubber, hard insulating silica gel, and the like.

The top of the protection cover 206 is provided with a mounting hole, a separation suction block 407 is mounted on the mounting hole, the separation suction block 407 comprises an electric insertion part 408 and a magnetic part 409, the electric insertion part 408 extends out of the protection cover 206, and the magnetic part 409 extends into the separation sliding seat 304. The separation suction block 407 is an existing device, such as an electromagnetic iron, an electromagnetic coil, etc., when the separation suction block 407 is in an energized state, the separation suction block 407 can generate a magnetic force, and when the separation suction block 407 is in a de-energized state, the separation suction block 407 does not have a magnetic force. It should be noted that the plug-in portion 408 of the separation suction block 407 is electrically connected to a separate external power source, which may be a storage battery or the like.

It should be noted that, when a temperature abnormality occurs in the cabinet 101, the emergency power-off switch 204 may automatically cut off the total circuit current of the cabinet 101, so as to play a role in protection; when the temperature in the cabinet 101 is recovered to be normal, the emergency power-off switch 204 can automatically recover the total circuit current of the cabinet 101, so that intelligent recovery is realized. Specifically, as shown in fig. 8 and 11, when the temperature sensor detects that the temperature inside the cabinet 101 is too high, the temperature sensor can feed back a signal to the control system, and the control system receives the signal and then controls the power-on portion 408 of the separation suction block 407 to be connected with an independent external power supply, so that the separation suction block 407 is electrified, and when the separation suction block 407 is electrified, the magnetic portion 409 of the separation suction block 407 generates magnetic force, the separation suction block 407 generates adsorption effect (the separation suction block is made of iron material) after the magnetic force is generated, at this time, the separation suction plate 306 is sucked at the bottom of the separation suction block 407, and in the process, the separation suction plate 306 drives the separation suction bar 307 to move upwards for a certain distance, so as to drive the connecting bar 309 to move upwards for a certain distance, at this time, the connecting bar 309 is not embedded in the first connecting groove 301 and the second connecting groove 303, at this time, the first power-on block 209 and the second power-on block 302 are in a disconnected state, at this time, the current between the first power-on block 209 and the second power-on block 302 is in an automatic cut-off state, and thus the function of the total current 101 of the cabinet is realized. It should be noted that when the separation pulling plate 306 is pulled to the bottom of the separation pulling block 407 (i.e. when the total circuit current of the cabinet 101 is in the power-off state), the reset pulling block 401 is also driven by the connecting bar 309 to move upwards for a certain distance, at this time, the reset pulling block 401 drives the reset pulling bar 405 to move upwards for a certain distance, at this time, the reset pulling plate 404 moves upwards for a certain distance along the reset sliding seat 402, at this time, the extension spring 406 is in the stretched state.

As shown in fig. 7 and 10, after the temperature in the cabinet 101 is recovered to be normal, the temperature sensor feeds back a signal to the control system, after receiving the signal, the control system controls the power-on part 408 of the separation suction block 407 to be disconnected from the independent external power supply, so that the separation suction block 407 is powered off, when the separation suction block 407 is powered off, the magnetic part 409 of the separation suction block is lost, the separation suction block 407 after the magnetic force is lost can lose the adsorption effect on the separation pull plate 306, at the moment, the expansion spring 406 in a stretched state can rebound and reset under the action of the rebound force, and in the rebound and reset process of the expansion spring 406, the reset pull plate 404 is driven to move downwards along the reset slide seat 402 for a certain distance, so as to drive the reset pull plate 405 to move downwards for a certain distance, at the moment, the connecting bar 309 is also driven to move downwards for a certain distance, and after the expansion spring 406 is reset, the connecting bar 309 is re-embedded on the first connecting groove 301 and the second connecting groove 303, at the moment, the current between the first power-on block 209 and the second power-on block 302 is in an automatic state, so that the total current recovery function of the cabinet 101 is realized. In addition, it should be noted that after the extension spring 406 is reset, the upper and lower degrees of freedom of the connecting strip 309 can be limited by the specific locking force of the extension spring 406, and the left and right degrees of freedom and the front and rear degrees of freedom of the connecting strip 309 can be limited by the structural design of the first connecting slot 301 and the second connecting slot 303, so that when the emergency power-off switch 204 is in a conducting state, six degrees of freedom of the connecting strip 309 can be limited, and when the ring main unit is impacted by external force, the stability and the reliability of the connecting strip 309 are better, the stability of circuit current can be further ensured, and the current oscillation condition is avoided; and the installation range of the emergency power-off switch 204 can be increased, for example, the emergency power-off switch 204 can be inversed or laterally installed in the cabinet 101.

In summary, when the temperature abnormality occurs in the cabinet 101, the emergency power-off switch 204 can automatically cut off the total circuit current of the cabinet 101, thereby improving the service life of the electrical components in the cabinet 101, and avoiding the leakage accident caused by the continuous rise of the temperature, so as to play a role in power-off protection; when the temperature in the cabinet body 101 is recovered to be normal, the total circuit current of the cabinet body 101 can be automatically recovered through the emergency power-off switch 204, manual recovery is not needed, the operation is very convenient, and intelligent recovery is realized. And the emergency power-off switch 204 has a simple integral structure, adopts the separation suction block 407 and the telescopic spring 406 as power elements, and has low manufacturing cost and better reliability.

As shown in fig. 12, guide grooves 501 are formed on two sides of the separation slide base 304, guide blocks 502 are formed on two sides of the separation pull plate 306, and the guide blocks 502 can be engaged with the guide blocks 502.

It should be noted that, the guide groove 501 and the guide block 502 play a guiding and limiting role. Specifically, during the process of the separation suction block 407 attracting the separation pull plate 306 to move, the separation pull plate 306 is guided and limited by the guide groove 501 and the guide block 502, so as to improve the stability of the separation pull plate 306 during the sliding process. Secondly, in the process that the extension spring 406 drives the connecting strip 309 to reset, the connecting strip 309 is guided and limited by the guide groove 501 and the guide block 502, so that the connecting strip 309 can be ensured to be smoothly butted with the first connecting groove 301 and the second connecting groove 303, and the reliability of the device is improved.

Lead holes 503 are formed in two sides of the protection cover 206, lead pieces 504 are arranged on the first power-on block 209 and the second power-on block 302, and the lead pieces 504 penetrate through the lead holes 503 and extend out of the protection cover 206.

It should be noted that, through the design of the lead sheet 504, the installer can connect the lead wire of the total circuit of the cabinet body 101 with the emergency power-off switch 204 fast, so that the emergency power-off switch 204 can control the on-off of the total circuit current of the cabinet body 101, and the practicability is better.

An air pressure sensor is disposed in the first cavity 105, and the air pressure sensor is connected with the air pump 201 in a communication manner.

It should be noted that, the air pressure sensor is disposed in the first cavity 105, the real-time pressure information of the air in the first cavity 105 can be detected by the first air pressure sensor, after the real-time pressure information is obtained, the real-time pressure information is compared with the preset pressure information, so as to obtain a pressure deviation, if the pressure is no longer within the preset range, the air pressure sensor feeds back the information to the air pump 201, so that the air pump 201 adjusts the air pumping power, and the heat dissipation power of the heat dissipation component is kept within the preset range, thereby improving the regulation precision.

The invention also discloses a control method of the intelligent ring main unit, which is applied to any one of the intelligent ring main units and comprises the following steps:

acquiring temperature parameter information in the cabinet body through a temperature sensor in preset time, calculating a temperature change rate based on the temperature parameter information, and comparing the temperature change rate with a preset change rate;

if the temperature change rate is larger than the preset change rate, controlling the air pump to start so as to cool the inside of the cabinet body;

simultaneously, continuously acquiring real-time temperature information corresponding to each moment in the cabinet body in a preset time period through a temperature sensor, and establishing a temperature-time response linear graph based on the real-time temperature information corresponding to each moment;

extracting a first temperature value, a second temperature value and a third temperature value from the temperature-time response line graph; the first temperature value is a temperature value corresponding to a start endpoint in the temperature-time response linear graph, the second temperature value is a temperature extreme value in the temperature-time response linear graph, and the third temperature value is a temperature value corresponding to an end endpoint in the temperature-time response linear graph;

Performing difference operation processing on the second temperature value and the first temperature value to obtain a first temperature difference value; performing difference operation processing on the third temperature value and the first temperature value to obtain a second temperature difference value; and comparing the first temperature difference with a second temperature difference;

and if the first temperature difference value is equal to the second temperature difference value, controlling the emergency power-off switch to be turned off so as to cut off the current of the total circuit in the cabinet body.

It should be noted that if the temperature change rate is greater than the preset change rate, it may be stated that the temperature inside the cabinet body is continuously increasing, at this time, the air pump needs to be controlled to be started to radiate heat inside the cabinet body, in this process, the real-time temperature information corresponding to each moment inside the cabinet body in a preset time period is continuously obtained through the temperature sensor, and a temperature-time response linear graph is built based on the real-time temperature information corresponding to each moment, so that a first temperature value, a second temperature value and a third temperature value are extracted from the temperature-time response linear graph; performing difference operation processing on the second temperature value and the first temperature value to obtain a first temperature difference value; performing difference operation processing on the third temperature value and the first temperature value to obtain a second temperature difference value; and comparing the first temperature difference with a second temperature difference; if the first temperature difference is equal to the second temperature difference, it can be stated that the second temperature value and the third temperature value are overlapped in the temperature-time response line graph, at this time, even if the heat dissipation component is controlled to work to dissipate heat of the cabinet body, the temperature inside the cabinet body is still continuously increased, and the temperature inside the cabinet body does not have a descending trend, at this time, it is stated that serious overload and overcurrent phenomena are likely to occur on the electric elements inside the cabinet body, so that the electric elements inside the cabinet body continuously generate heat, at this time, the emergency power-off switch needs to be controlled to be turned off to cut off the current of the total circuit inside the cabinet body, so as to play the over-temperature protection role, and further improve the service life of the ring main unit.

Preferably, in a preferred embodiment of the present invention, the method further comprises the steps of:

if the first temperature difference value is larger than the second temperature difference value, carrying out difference value operation processing on the first temperature difference value and the second temperature difference value to obtain a temperature difference value threshold;

comparing the temperature difference threshold with a preset threshold;

if the temperature difference value threshold is larger than a preset threshold, the emergency power-off switch is controlled to be turned off so as to cut off the current of the total circuit in the cabinet body; and if the temperature difference threshold is not greater than the preset threshold, not performing regulation and control treatment on the emergency power-off switch.

If the first temperature difference is greater than the second temperature difference, it may be stated that the second temperature value and the third temperature value do not overlap in the temperature-time response line graph, and the second temperature value is greater than the third temperature value, which indicates that there is a trend of decreasing the temperature in the cabinet after the heat dissipation component is controlled to work to dissipate heat in the cabinet, and then the next step of determining procedure is executed. Specifically, firstly, carrying out difference operation processing on the first temperature difference value and the second temperature difference value to obtain a temperature difference value threshold; if the temperature difference threshold is greater than the preset threshold, it can be stated that although the temperature in the cabinet body has a decreasing trend after the heat dissipation component is controlled to dissipate heat, the decreasing effect of the temperature in the cabinet body is not obvious, and it is stated that serious overload and overcurrent phenomena of the electrical components in the cabinet body are likely to occur, so that the electrical components in the cabinet body continuously generate heat, and the emergency power-off switch is also controlled to be turned off to cut off the current of the total circuit in the cabinet body. If the temperature difference threshold is not greater than the preset threshold, it can be stated that after the heat dissipation assembly is controlled to work to dissipate heat of the cabinet body, the temperature in the cabinet body has a descending trend, and the temperature value in the cabinet body is restored to be within a normal value range, the emergency power-off switch is not regulated and controlled, so that the ring main unit can normally operate. In sum, through the temperature change condition in the analysis cabinet to whether the electrical components in the intelligent judgment cabinet has continuously taken place serious overtemperature condition, with the internal total circuit current of automatic cutting off cabinet, thereby realize intelligent protect function.

Furthermore, the method comprises the following steps:

building a fault prediction model based on a convolutional neural network, acquiring fault temperature values corresponding to all electrical components through a big data network, and importing the fault temperature values corresponding to all electrical components into the fault prediction model for training to obtain a trained fault prediction model;

acquiring temperature values corresponding to preset time intervals in the cabinet body through a temperature sensor in preset time, establishing a sorting table, importing the temperature values corresponding to the preset time intervals into the sorting table for size sorting, and extracting the maximum temperature values from the sorting table;

the maximum temperature value is imported into the trained fault prediction model, so that the maximum temperature value is compared with fault temperature values corresponding to all electrical elements in the trained fault prediction model, and whether the maximum temperature value is larger than the fault temperature value corresponding to all electrical elements is judged;

if the fault is larger than the preset value, the electrical element is marked as a fault device, a fault report is generated, and the fault report is sent to a remote user side.

It should be noted that, due to different preparation materials and preparation processes of the electrical components installed in the cabinet body, the fault temperature values corresponding to the electrical components are different, and the fault temperature is a temperature value point for triggering the electrical components to generate over-temperature faults, and the temperature value point can be obtained through a big data network. In the process of high-temperature faults in the cabinet body, acquiring a temperature value corresponding to a preset time interval in the cabinet body through a temperature sensor, establishing a sorting table, importing the temperature value corresponding to the preset time interval into the sorting table for size sorting, and extracting a maximum temperature value from the sorting table; comparing and analyzing the maximum temperature value with fault temperature values corresponding to the electrical components, if the maximum temperature value is larger than the fault temperature value corresponding to one or more electrical components, it is explained that in the high-temperature fault, the one or more electrical components are burnt out, at the moment, the control system can automatically collect the positions and names of the burnt out electrical components, so that a fault report is generated, and the fault report is sent to a remote user side, so that a maintainer can timely know the fault and timely maintain the faulty electrical components, and the maintainer can pertinently maintain the faulty electronic components, so that the maintenance time of subsequent staff is saved.

Furthermore, the method comprises the following steps:

acquiring real-time voltage values corresponding to all time points in a preset time period in a cabinet circuit, establishing a size sorting table, importing the real-time voltage values corresponding to all time points into the size sorting table for size sorting, and extracting a maximum voltage value and a minimum voltage value from the size sorting table;

a voltage change rate based on the maximum voltage value and the minimum voltage value; comparing the voltage change rate with a preset voltage change rate;

if the voltage change rate is larger than a preset voltage change rate, acquiring a first time point corresponding to the maximum voltage value and acquiring a second time point corresponding to the minimum voltage value; calculating a first difference value based on the first time point and the second time point; comparing the first difference value with a preset difference value;

if the first difference value is larger than the preset difference value, the emergency power-off switch is controlled to be turned off so as to cut off the current of the total circuit in the cabinet body; and if the first difference value is not greater than the preset difference value, not performing regulation and control treatment on the emergency power-off switch.

It should be noted that, if the electrical components in the cabinet body normally work, the circuit voltage in the cabinet body is stabilized within a certain range, and if the voltage change rate is greater than the preset voltage change rate, it is noted that the electrical components in the cabinet body may have abnormal phenomena such as overcurrent and overload, and the next step of judgment is needed. If the first difference value is larger than the preset difference value, the circuit voltage in the cabinet body is in an abnormal state for a long time, and the circuit in the cabinet body needs to be cut off for power-off protection at the moment, because if the electric appliance element is in a high-voltage state for a long time, the electric appliance element can continuously generate heat, and when the heat reaches a certain degree, the temperature in the electric appliance element can reach a ignition point, so that a fire accident is caused, and therefore, under the condition, in order to ensure the safety of the ring main unit, the circuit current needs to be cut off, and the electric appliance element is prevented from continuously generating heat. In contrast, if the first difference is not greater than the preset difference, the abnormal time of the circuit voltage is only at a moment, and the reason for the abnormal circuit is most likely to be caused by external factors, and the moment is insufficient to cause potential safety hazard to the ring main unit, so that the circuit current does not need to be cut off under the condition. It is noted that the real-time voltage value may be obtained by a voltage sensor.

Furthermore, the method comprises the following steps:

acquiring a real-time temperature value in the cabinet body through a temperature sensor;

judging whether the real-time temperature value is smaller than a preset temperature value or not;

if the current is smaller than the preset value, controlling the emergency power-off switch to reset so as to make the current of the cabinet circuit be conducted again;

acquiring a real-time voltage value of the circuit current of the cabinet body again, and calculating a voltage change rate based on the real-time voltage value;

judging whether the voltage change rate is still larger than a preset voltage change rate, if so, generating a fault report, and sending the fault report to a remote user terminal.

It should be noted that, by the method, whether the electrical element fails is an internal cause or an external cause can be further determined, if the electrical element fails, a failure report is generated, and the failure report is sent to a remote user side, so as to inform maintenance personnel of timely maintenance.

The foregoing description of the preferred embodiments according to the present invention is provided as illustration and description, and is not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. The utility model provides an intelligent ring main unit, is in including the cabinet body and setting radiating component and emergency power-off switch on the cabinet body, its characterized in that:

the heat dissipation assembly comprises a heat dissipation plate, one side of the heat dissipation plate is fixedly connected with the back of the cabinet body, the other side of the heat dissipation plate is fixedly connected with a heat dissipation frame, an air flow regulating block is slidably connected in the heat dissipation frame, the interior of the heat dissipation frame is divided into a first cavity and a second cavity through the air flow regulating block, and a plurality of rows of air inlets are formed in the middle area of the heat dissipation plate;

two telescopic connecting rods are arranged in the first cavity, one ends of the telescopic connecting rods are fixedly connected with the air flow regulating block, the other ends of the telescopic connecting rods are fixedly connected with the top wall of the first cavity, a power spring is sleeved on the telescopic connecting rods, one ends of the power spring are fixedly connected with the air flow regulating block, the other ends of the power spring are fixedly connected with the top wall of the first cavity, at least one air pump is arranged at the top of the heat dissipation frame, an air outlet of the air pump is connected with one end of an air supply pipe in a matched mode, and the other ends of the air supply pipes extend into the first cavity;

a plurality of temperature sensors are arranged at preset positions in the cabinet body, and the temperature sensors are in communication connection with the air extracting pump; the side part of the cabinet body is provided with an air outlet;

When the air pump is in a non-working state, the power spring is in a natural state, the air flow regulating block is pulled to the upper area of the heat dissipation plate under the action of natural tightening force of the power spring, no air inlet hole exists in the first cavity, and the heat dissipation assembly is in the non-working state; when the air pump is in a working state, the cooling gas pumped into the first cavity by the air pump can generate pressure on the air quantity adjusting block, the air quantity adjusting block can be pushed to move downwards, the power spring can be in a stretching state, the air inlet hole can be formed in the first cavity, and the cooling gas can enter the cabinet through the air inlet hole, so that the cooling function is achieved.

2. The intelligent ring main unit as recited in claim 1, wherein: the emergency power-off switch is arranged on a total circuit in the cabinet body, the on-off of the total circuit current of the cabinet body can be controlled through the emergency power-off switch, the emergency power-off switch comprises a mounting bottom plate and a protective cover, a first mounting seat and a second mounting seat are symmetrically arranged on the mounting bottom plate, a first power-on block is fixedly arranged at the top of the first mounting seat, and a first connecting groove is formed in the first power-on block; the top of the second installation seat is fixedly provided with a second electrifying block, and the second electrifying block is provided with a second connecting groove.

3. An intelligent ring main unit as claimed in claim 2, wherein: a separation sliding seat is arranged in the protective cover, one end of the separation sliding seat is fixedly connected with the inner wall at the top of the protective cover, and the other end of the separation sliding seat is fixedly connected with a first limiting piece; the separation sliding seat is connected with a separation pulling plate in a sliding manner, the bottom end of the separation pulling plate is fixedly connected with one end of a separation pulling strip, the separation pulling strip penetrates through the first limiting piece to extend out of the separation sliding seat, the other end of the separation pulling strip is fixedly connected with a rubber piece, and the bottom end of the rubber piece is fixedly connected with a connecting strip.

4. An intelligent ring main unit according to claim 3, wherein: the two sides of the middle part of the connecting strip are provided with reset pull blocks, the two sides of the middle part of the mounting bottom plate are provided with reset sliding seats, one end of each reset sliding seat is fixedly connected with the mounting bottom plate, and the other end of each reset sliding seat is fixedly connected with a second limiting piece; the top of the reset pull plate is fixedly connected with one end of a reset pull rod, the other end of the reset pull rod penetrates through the second limiting piece to extend out of the reset slide seat, and the other end of the reset pull rod is fixedly connected with the reset pull block; the reset slide seat is internally provided with a telescopic spring, one end of the telescopic spring is fixedly connected with the bottom of the reset slide seat, and the other end of the telescopic spring is fixedly connected with the bottom of the reset pull plate.

5. An intelligent ring main unit according to claim 3, wherein: the top of safety cover has been seted up the mounting hole, install the separation on the mounting hole and inhale the piece, the separation inhale the piece and include insert electric portion and magnetic force portion, insert electric portion and stretch out to the safety cover is outside, magnetic force portion stretches into to the separation slide is inside.

6. An intelligent ring main unit according to claim 3, wherein: guide grooves are formed in two sides of the separation sliding seat, guide blocks are arranged on two sides of the separation pulling plate, and the guide blocks can be embedded with the guide grooves.

7. An intelligent ring main unit as claimed in claim 2, wherein: lead holes are formed in two sides of the protective cover, lead sheets are arranged on the first electrifying block and the second electrifying block, and the lead sheets penetrate through the lead holes and extend out of the protective cover.

8. The intelligent ring main unit as recited in claim 1, wherein: the first cavity is internally provided with an air pressure sensor, and the air pressure sensor is in communication connection with the air extracting pump.

9. A control method of an intelligent ring main unit, applied to any one of claims 1-8, characterized by comprising the following steps:

Acquiring temperature parameter information in the cabinet body through a temperature sensor in preset time, calculating a temperature change rate based on the temperature parameter information, and comparing the temperature change rate with a preset change rate;

if the temperature change rate is larger than the preset change rate, controlling the air pump to start so as to cool the inside of the cabinet body;

simultaneously, continuously acquiring real-time temperature information corresponding to each moment in the cabinet body in a preset time period through a temperature sensor, and establishing a temperature-time response linear graph based on the real-time temperature information corresponding to each moment;

extracting a first temperature value, a second temperature value and a third temperature value from the temperature-time response line graph; the first temperature value is a temperature value corresponding to a start endpoint in the temperature-time response linear graph, the second temperature value is a temperature extreme value in the temperature-time response linear graph, and the third temperature value is a temperature value corresponding to an end endpoint in the temperature-time response linear graph;

performing difference operation processing on the second temperature value and the first temperature value to obtain a first temperature difference value; performing difference operation processing on the third temperature value and the first temperature value to obtain a second temperature difference value; and comparing the first temperature difference with a second temperature difference;

And if the first temperature difference value is equal to the second temperature difference value, controlling the emergency power-off switch to be turned off so as to cut off the current of the total circuit in the cabinet body.

10. The method for controlling an intelligent ring main unit according to claim 9, further comprising the steps of:

if the first temperature difference value is larger than the second temperature difference value, carrying out difference value operation processing on the first temperature difference value and the second temperature difference value to obtain a temperature difference value threshold;

comparing the temperature difference threshold with a preset threshold;

if the temperature difference value threshold is larger than a preset threshold, the emergency power-off switch is controlled to be turned off so as to cut off the current of the total circuit in the cabinet body; and if the temperature difference threshold is not greater than the preset threshold, not performing regulation and control treatment on the emergency power-off switch.

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